nand: Don't inherit from Sysbus

Nand chips are not sysbus devices - they do not have any sense of MMIO,
nor interrupts. Re-parent to TYPE_DEVICE accordingly.

Cc: afaerber@suse.de
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/block/nand.c

@@ -21,7 +21,7 @@
 # include "hw/hw.h"
 # include "hw/block/flash.h"
 # include "sysemu/blockdev.h"
-# include "hw/sysbus.h"
+#include "hw/qdev.h"
 #include "qemu/error-report.h"
 
 # define NAND_CMD_READ0		0x00
@@ -54,7 +54,8 @@
 
 typedef struct NANDFlashState NANDFlashState;
 struct NANDFlashState {
-    SysBusDevice busdev;
+    DeviceState parent_obj;
+
     uint8_t manf_id, chip_id;
     uint8_t buswidth; /* in BYTES */
     int size, pages;
@@ -440,7 +441,7 @@ static void nand_class_init(ObjectClass *klass, void *data)
 
 static const TypeInfo nand_info = {
     .name          = TYPE_NAND,
-    .parent        = TYPE_SYS_BUS_DEVICE,
+    .parent        = TYPE_DEVICE,
     .instance_size = sizeof(NANDFlashState),
     .class_init    = nand_class_init,
 };